Double stroke cold header



Jan. 4, 1938. J. H. FRIEDMAN 2,104,297

DOUBLE STROKE com) HEADER Filed Nov. 4, 1936 5 Sheets-Sheet 1 In Z5 .2927 Q a0 A 2 3. 12 2 4+ g5 Jan. 4, 1938. H, FRlEDMAN 2,104,297

DOUBLE STROKE COLD HEADER Filed Nov. 4, 1956 3 Sheets-Sheet 2JblvzliFfliedlnalb Jan. 4, 1938. J. H. FRIEDMAN 2,104,297

DOUBLE STROKE COLD HEADER Filed Nov. 4, 1956 5 Sheets-Sheet 3 PatentedJan. 4,1938

PATENT aor ri'cs STROKE COLD HEADER John H. Friedman, Tlmn, Ohio,assignor to .The National Machinery 00., Tlfln, Ohio ApplicationNovember 4, 1936, Serial No. 109,196

18 Claims.

This invention relates to cold headers of the double stroke type whereinseparate tools are carried by the slide and are shiftable automaticallyto be brought successively into blank engaging position. It is designedprimarily as an improvement upon the structure disclosed in Patent1,955,061, issued to me on April 17, 1934.

In the patented structure provision was made for minute adjustment ofthe tools for the purpose of centering them properly upon the work whenbrought to active or work-engaging position. It has been found inpractice, however, that while the adjusting means disclosed in thepatented device mentioned, are useful for the purpose of properlysetting the respective tools,

the operations required to effect the adjustment have been too involvedand complicated to enable many operators to understand them. As a resultone adjustment frequently has been thrown out while trying to obtainanother adjustment.

An object of the present invention is to simplify the adjusting means tosuch an extent as to enable all operators to understand them and makethem easily and quickly.

'With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claims, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings Figure 1 is a front elevation of .the heading slide ofa double stroke cold header provided with the improved form of toolcarrier utilizing thenew and novel adjusting means.

Figure 2 is a section on line 22, Figure 1.

Figure 3 is a section on line 33, Figure 1.

Figure 4 is a section on line 4-4, Figure 2. Figure 5 is a frontelevation on a reduced scale of the slide of a cold header showing thetool carrier at one limit of its movement.

Figure 6 is a similar view showing the tool carrier at the other limitof its movement.

Figure '7 is a similar view showing the tool carrier in an intermediateposition and illustrating, by full and broken lines, two of thepositions to which the tool holder can be adjusted relative to the headof the carrier, these adjustments being effected for the purpose ofshifting the position of the cone toolor punch relative to thefinishing-tool or punch.

Figure 8 is a view similar to Figure '7 showing, by full and brokenlines, other adjustments of the tool holder which can be effected forshifting 6 both tools or punches upwardly or downwardly relative tothehead of the carrier.

The heading slide I, which is adapted to be operated by any suitablemechanism, is provided at its. upper corner portions with ears 2 in 10which are mounted stop screws 3 and 4 respectively. A lock nut 5 ismounted on each screw and is adapted to cooperate with the adjacent ear2 for the purpose of holding the screw against accidental rotationfollowing its adjust- 5 ment.

A bore 6 is extended into. the face of the slide i and rotatably mountedtherein is a shank '1 extending. backwardly from the carrier 8. One

' end portion of this carrier projects between the 20 screws 3 and 4 andhas converging side faces 9 and I0 adapted to abut against the heads Hand I2 of the respective screws 3 and 4. Thus while the carrier iscapable of rocking back and forth about the axis of shank I, suchmovement 25 will be limited by the respective screws which a can beadjusted toward or from each other for the purpose of insuring correctmovement of the held tools or punches as hereinafter explained.

Extending from the carrier 8 at points equi- 30 distant from the axis ofshank I, are studs l3 on which are rotatably mounted abutment collars i4and i5 respectively. These collars are seated within recesses I 6 and I1respectively provided in the back face of the tool holder l8 which, as35 illustrated, bears snugly against the front surface of carrier 8.This tool holder is formed with a boss or extension l9 having sockets 20and 2| for receiving the heading tools or punches. In the structureillustrated a finishing 40 punch or tool 22 has been shown seated in thesocket 20 while a cone punch or tool 23 has been shown seated in thesocket 2|.

For the purpose of securing the tool holder I8 to carrier 8, threadedstuds 24 are extended 45 cesses l8 and I! in the tool holder are ofgreater will not interfere with the sliding adjustment of the toolholder I! on the carrier 8.

Formed within the tool holder I. along parallel lines and opening intothe respective recesses l8 and II, are bores 21 in which are movablymounted thrust members 28 and 28 respectively. These can be in the formof pins to the outer end portions of which are swiveled screw plugs 30engaging threads in the outer end portions of the respective bores.These plugs can be formed with sockets so as to be readily rotated bymeans of a suitable tool for the purpose of feeding pins 28 and 29toward or from the respective recesses l8 and i 1. The inner ends ofthese thrust members 28 and 29 are adapted to bear against therespective collars l4 and I5 and the peripheries of these collars arepreferably flattened at the points designed to receive the thrust asindicated at 3|. Alined with these thrust members 28 and 28 areadjusting screws 32 and 33 extending from one side of the tool holder i8 into the respective recesses l8 and I! for the purpose of bearingagainst the collars I4 and Ill.

The two recesses I6 and I! are located between bores 34 and 35 whichextend to one side of the tool holder. In these bores are slidablymounted adjusting wedges 36 and 31 respectively each of which isprovided with a screw plug 38 swiveled thereon and engaging threads inthe end portion of its bore. The plugs 38 are formed with sockets forthe reception of suitable tools whereby they can be turned for thepurpose of feeding the wedges toward or, from the recesses l8 and I1respectively. These wedges are adapted to tightly engage the peripheriesof the respective collars l4 and I5 and, as shown particularly in Figure4, those portions of the-collars which are engaged by the wedges, can beflattened, as

at 39. The collar engaging faces of the wedges are parallel.

By providing the various adjusting means thus far described a minuteshifting of either or both of the tools relative to the axis of rotationcan be eifected readily. For example, should it be desired to lower thecone punch or tool 23 relative to the held work, it becomes necessarymerely to loosen the nut 5 on the screw 3 and adjust the head ll towardthe opposed head l2. Consequently when the tool holder swings about theaxis of the shank I, the cone punch or tool will be brought to a stop inworking position after its arcuate movement about said axis. To raisethe cone punch the foregoing adjustment is reversed. By makingcorresponding adjustments of the screw head 12 the finishing punch ortool can be stopped at a higher or a lower point during its arcuatetravel.

For the purpose of effecting a lateral adjustment of either tool, thenuts 28 are loosened. If the adjustment is to be effected toward theleft in Figures 1 and 4 the screw 32 or 33 of the tool to be adjusted isloosened after which the corresponding thrust pin 28 or29 is turnedinwardly against its collar until the previously adjusted screw has beenbrought into clamping contact with the collar. An adjustment ofthe toolto the right is effected by reversing the foregoing action. Whensufficient adjustment cannot be obtained by the manipulation of thescrews 3 and l, as heretofore explained, their total adjustment may bedivided by moving the entire tool holder upwardly or downwardly throughthe manipulation of the wedges 36 and 31. It is to be understood ofcourse that following every adjustment of the parts, the nuts 28 must betightened to fasten the tool holder in the position to which it is hasbeen adjusted.

When it is desired to remove the tool holder the upper wedge 38 isloosened after which nuts 28 are removed and the holder can then .bewithdrawn. The other wedge should not be loosened. After the holder hasbeen. replaced the loosened wedge is tightened. Thus the holder willherestored to the exact position previously occupied by it.

Importance is attached to the fact that by means of the adjustingdevices which are now disclosed, either tool can be adjusted withoutloosing the adjustment of the other tool. These adjustments can be madequickly and accurately and are not confusing but, on the contrary, are

quickly learned by any operator.

on the carrier and including means for supporting a finishing tool and acone tool, and cooperating means on the carrier and tool holder forshifting said holder bodily in any direction along that surface of thecarrier engaged thereby.

2. In a double stroke cold header a heading slide, a carrier mounted foroscillation thereon, adjustable means for limiting the oscillatingmovement of the carrier, a. tool holder slidably mounted on one face ofthe carrier, means for fastening said holder against movement on thecarrier, and cooperating means on the carrier and tool holder forshifting the holder bodily in any direction on the engaged surface ofthe carrier.

3. In a double stroke cold header a heading slide, a carrier mounted foroscillation thereon, adjustable means for limiting the oscillatingmovement of the carrier, a tool holder mounted on one face of thecarrier, separate tools movable with the holder, cooperating means onthe carrier and holder for adjusting said holder angularly relative toeither of the tools, and means carried by the tool holder andcooperating with the said adjusting meansfor adjusting the tool holderbodily in any direction along the surface of the carrier.

4. In a double stroke cold header a heading slide, a carrier mounted foroscillation thereon, adjustable means for limiting the oscillatingmovement of the carrier, a recessed tool holder bearing against onesurface of the carrier, prov.

jecting elements on the carrier extending loosely into the recesses inthe holder, separate tools movable with the holder, means in the holderand cooperating with said projecting means for sliding the holder on thecarrier, and means for binding the holder to the carrier to preventrelative movement thereof.

5. In a double stroke cold header a heading slide, a carrier mounted foroscillation thereon, means for limiting the oscillating movement of thecarrier, a tool holder bearing against one face of the carrier, separatetools movable with the holder, said holder having recesses back of therespective tools, projecting elements on the carrier and extendingloosely into the respective recesses, and adjusting means cooperatingwith said projecting elements and carried by the holder for shiftingsaid holder along the engaged surface of the carrier and relative to theaxis of movement of the carrier.

abutments projecting from the carrier, a tool holder fitted on thecarrier and recessed to loosely receive the abutments, said holderincluding means for engaging and supporting a finishing tool and a conetool, means on the holder and cooperating with the abutment element foradjusting the holder slidably along the carrier relative to the abutmentand for adjusting the holder angularly about either of the abutments.

'7. A double stroke cold header including a heading slide, a carriermounted for movement thereon, abutments on the carrier, a tool holderfitted against the carrier and recessed for loosely receiving theabutments, said holder having means for engaging and supporting afinishing tool and a cone tool, and opposed means adjustably mounted forcooperation with the abutments to adjust the holder slidably orangularly on the carrier.

8. A double stroke cold header including a heading slide, a carriermovably mounted thereon, spaced abutments on the carrier, a tool holderrecessed to loosely receive the abutments, said holder having means forengaging and supporting a finishing tool and a cone tool, opposedadjusting elements arranged in pairs and mounted in the holder, theadjusting elements of each pair being positioned to grip one of theabutments therebetween and being shiftable to slide the holder or adjustit angularly on the carrier and relative to the abutments.

9. A double stroke cold header including'a heading slide, a carriermovably mounted thereon, spaced abutments on the carrier includingrotatable portions, a tool holder recessed to loosely receive theabutments and positioned to bear against the carrier, said holder havingmeans for engaging and supporting a finishing tool and a cone tool, anda pair of opposed adjusting elements in the tool holder and cooperatingwith each abutment to slide the holder on the carrier and/or adjust itangularly about either,

of the abutments, and means for securing the holder to the carrier whenin any position to which it may be adjusted.

, 10. A double stroke cold header including a heading slide, a carrierthereon movably mounted, there being spaced abutments on the-carrier, atool holder recessed to receive the abutments and normally bearingagainst the carrier, the recess being proportioned to permit slidingmovement of the holder relative to the carrier, a pair of opposedadjusting elements in the tool holder and engaging the abutments, saidelements being operable to slide the holder on the carrier, and meansfor securing the holder to the carrier when in any position to which itmay be adj'usted.

11. A double stroke cold header including a heading slide, a carriermovably mounted thereon, abutments extending from the carrier, a toolholder having a recess for receiving the abutments, said holder bearingnormally against the carrier, the recess in the holder beingproportioned to permit sliding movement of the holder along thecontacting face of the carrier, opposed wedges adjustably mounted in theholder for engagement with the abutments, andmeans for securing theholder to the carrier when in any position to which it may be adjusted.

12. A double stroke cold header including a heading slide, a carriermounted for oscillation thereon, means for limiting the oscillatingmovement of the carrier, abutments extending from the carrier andincluding rotatable portions, a tool holder fitted against the carrierand recessed to receive the abutments, the recess in the holder beingproportioned to permit sliding movement of the holder along thecontacted surface of the carrier in any direction, adjustable means inthe holder and cooperating with the rotatable portions of the abutmentsfor shifting the holder bodily along the contacted surface of thecarrier and/or adjusting it angularly on said surface and relative toeither abutment, and means in the holder and cooperating with theabutments for sliding the holder along the carrier on lines intersectingthe directions. of adjustment eflected by the first named adjustingmeans.

13. In a double stroke cold header a heading slide, a carrier mountedfor oscillation thereon. adjustable means for limiting the oscillatingmovement of the carrier, spaced abutments on the carrier, a tool holderbearing against the and cooperating with the abutments for bodilyshifting the holder in 'either of two directions on the contactedsurface of the carrier and/or angularly relative to either abutment, andadjustable means in the holder and cooperating with the abutments forshifting the holder bodily along lines intersecting the directions ofadjustment by the first named means.

JOHN H. FRIEDMAN.

